Thanks for the post @ayo you bring great news with yourself. Your story backs up the hypothesis of drug induced anxiety disorder.
Acid is by no means neurotoxic to the brain, but you've experienced brain-damage like symptoms. (Just like mine)
If your symptoms match exactly your previous ones, then the odds is you're falling in the category of people who unbalanced their potato brain chemistry.
Like, LSD can't cause damage of any form to decrease your cognition so badly. Dose of 1/5 mg??? Or 1500 times less than MDMA?
So far the most physical effect of LSD would be its 5ht2a agonist properties, causing some vasoconstriction, anxiety and psychosis like symptoms, but only as long as the duration of the drug.
The question is how a substance can trigger such self-destructive mechanism in the brain?
Even if it's coping strategy of unexpected stress factor, the prolonged cortisol would be much more harmful than any short-term benefits of the reaction.
Anyway my advice for you my friend from my experience is try not to develop obsessive habbits from excess worrying like I did.
As I've mentioned your story backups the long-known hypothesis that somehow we've triggered anxiety disorder, the best thing would be IGNORE it.
Don't fight it, don't accept it. Don't try healthy lifestyle if it's only for this, but ignore it. The LESS you care the better, I e tried supplementing, healthy lifestyle and whatever, but the dedication and the constant present of thought that something is wrong actually was used as a fuel of obsession.
We see in the thread terms like "hypersensitive". Why? Because most of us end blaming every negative thing happening to the because of this anxiety response.
If you ignoring doesn't work I can share what worked the best for me.
Curcumin supplement. (With piperine)
The supplement is increasing BDNF, decreases inflammation and helping with depression, anxiety and so on... A lot of research papers backing it.
Minerals like magnesium and zinc, looks like people with anxiety and depression end with deficit, due to their increased body needs of them.
Healthy diet, which means a lot of veggies, nuts, fish and grass fed, no hormones grown meat, organic/bio egggs.
Skip the fruits, too much sugar.
Eating only in 2 hour window a day.
Exercise and sunlight, the more the better!
Sleep! Magnesium, b6 and melatonin helped me to have quality one.
That's the most helpful things I've tried. I'm relapsing now and then, but at least I have normal days.
But yeah, if I were you I would just try to ignore everything and not falling into the obsession hole if this never ending vicious circle.
//Writing from phone, sorry for the spelling